In the mid 1980's, however, Charles Blakey died and the company eventually stopped producing the kits. Then, in about 1987, Tim Higham in Wimbledon, South London, took over the rights, production and distribution of Digisound kits. By the early 1990s the Digisound range of modules had expanded somewhat from the range Tim took over.
Then, some time in the early 1990s, Tim stopped producing the kits and disappeared from the public gaze. No-one seems to have a definitive answer as to why this happened although it was suggested by some that it might have been because the various core components couldn't be sourced in the (comparatively) small quantities required for the business - other sources suggest that he simply lost interest.
If anyone does have a definitive answer then I, for one, would be interested to hear it.